CNN Anderson Cooper 360 February 27, 2014 01:31:00
Over waterways in the midwest and the great lakes. in fact, this nasa photo shows the great lakes over 75% frozen. an ice jam spread as far east as pennsylvania. with warmer temperatures expected, these communities are bracing for the worst. >> incredible images. so when is the thaw supposed to come that those rivers -- that the residents are so worried about? when is that supposed to happen? >> reporter: well, the forecast for here, anderson, at least another week of temperatures nowhere near the freezing mark. but by about thursday the temperatures supposed to run up to the 40s and go into t...
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